Recent Progress on Multi-DOF 3D Printing:A Survey
摘要
Additive Manufacturing (AM, namely 3D printing) technology enables people to customize and fabricate physical models easily. This technique has been proved to be an essential supplement that can overcome many disadvantages of traditional manufacturing and significantly promote the developments of design and manufacturing in a variety of industries. Although it claims the ability to fabricate highly complex objects such as models with a high-genus number, the tool-paths used in conventional AM are still in a 2.5D manner-that is, materials are accumulated on the top of previously printed planar layers. A multilayer composite gives the result of a physically printed model. This reduction produces many problems that should be considered in the processes of designing and slicing, for instance, overhanging regions and the significant structural anisotropy. Obviously, it is not easy for novice users to take care of all these problems in the absence of expert knowledge. To ensure the success of printing, researchers have contributed their efforts to the development of pre-processing software. However, many parameters are closely connected to 3D printers, and these parameters need to be determined by tedious trail-and-errors. Due to this reason, how to integrate advanced robots with more degrees-of-freedom (DOF) into 3D printing becomes a popular topic as an interdisciplinary research area of robotics and advanced manufacturing. As a highly interdisciplinary research area, robotics is gradually reshaping the paradigm of traditional AM. In the past few years, the prompt developments on fabricating processes and computational techniques have expanded the capability of AM in many aspects. The future of AM lies in robotics, which will provide more flexible motions of material accumulation, integrate human-involved interactions into the process of fabrication, and also make large-scale fabrication possible. A variety of recent works has already made progress towards these goals b